#!/usr/bin/env bash
#
# Author: Markus Wenzel, TU Muenchen
#
# DESCRIPTION: display document (in DVI or PDF format)
PRG="$(basename "$0")"
function usage()
{
echo
echo "Usage: isabelle $PRG [OPTIONS] FILE"
echo
echo " Options are:"
echo " -c cleanup -- remove FILE after use"
echo
echo " Display document FILE (in DVI or PDF format)."
echo
exit 1
}
function fail()
{
echo "$1" >&2
exit 2
}
## process command line
# options
CLEAN=""
while getopts "c" OPT
do
case "$OPT" in
c)
CLEAN=true
;;
\?)
usage
;;
esac
done
shift $(($OPTIND - 1))
# args
[ "$#" -ne 1 ] && usage
FILE="$1"; shift
## main
[ -f "$FILE" ] || fail "Bad file: $FILE"
case "$FILE" in
*.dvi)
VIEWER="$DVI_VIEWER"
;;
*.pdf)
VIEWER="$PDF_VIEWER"
;;
*)
fail "Unknown file type: $FILE";
esac
if [ -n "$CLEAN" ]; then
PRIVATE_FILE="${ISABELLE_TMP:-/tmp}/$$"$(basename "$FILE")
mv "$FILE" "$PRIVATE_FILE" || fail "Cannot move file: $FILE"
$VIEWER "$PRIVATE_FILE"
sleep 5 #try to avoid races
rm -f "$PRIVATE_FILE"
else
exec $VIEWER "$FILE"
fi